Document
UTC LP2950/2951
LINEAR INTEGRATED CIRCUIT
100 mA LOW-DROPOUT VOLTAGE REGULATOR
DESCRIPTION
The UTC LP2950/2951 is a monolithic integrated voltage regulator with low dropout voltage, and low quiescent current. It includes many features that suitable for different applications. Available in 3-pin TO-92, DIP-8 and SOP-8 packages.
1
TO-92
SOP-8
FEATURES
*High accuracy 2.5, 3.0, 3.3, 3.6 or 5V fixed output for TO-92, SOP-8 package. *Extremely low quiescent current and dropout voltage. *Extremely tight load and line regulation. *Current and thermal limiting. *Very low temperature coefficient. *Logic controlled shutdown and error flag available for DIP and SOP package. *Output voltage programmable for DIP and SOP package.
DIP-8
APPLICATIONS
*Battery powered equipment. *High efficient linear regulator down to 1.24V. *Cellular phones.
ORDERING INFORMATION
PART NUMBER
UTC LP2950-5.0 UTC LP2950-3.0 UTC LP2950-3.3 UTC LP2950-3.6 UTC LP2950-2.5 UTC LP2950-5.0 UTC LP2950-3.0 UTC LP2950-3.3 UTC LP2951 UTC LP2951
TEMPERATURE RANGE
-40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C -40 ~ +125°C
PACKAGE
3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 3-Pin TO-92 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin SOP-8 plastic 8-Pin DIP-8 plastic
ACCURACY
2.0% 1.0% 1.0% 2.0% 1.0% 2.0% 1.0% 1.0% 2.0% 2.0%
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-001,E
UTC LP2950/2951
PIN CONFIGURATIONS
LINEAR INTEGRATED CIRCUIT
UTC LP2950
1 2 3
OUTPUT GND
INPUT
TO-92 Plastic Package Bottom View
OUTPUT SENSE SHUTDOWN
1 2
8 7 6 5
INPUT FEEDBACK 5V TAP
3
4
UTC LP2951
GND
ERROR
SOP-8 OR DIP-8 PACKAGE FOR UTC LP2951
OUTPUT NC SHUTDOWN
1 2
8 7 6 5
INPUT NC NC
3
4
UTC LP2950
GND
ERROR
SOP-8 OR DIP-8 PACKAGE FOR UTC LP2950
Fig.1
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-001,E
UTC LP2950/2951
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNRAGULATED DC
FEEDBACK
7
INPUT
8
OUTPUT
1
5V 150mA MAX.
SENSE 182kΩ
2 6
1.5 µ F
FROM CMOS OR TTL
SHUT DOWN
3
ERROR AMPLIFIER 60mV
5V TAP
330KΩ
60kΩ ERROR DETECTION COMPARATOR
ERROR
5
TO CMOS OR TTL
1.23 REF
GND
4
FOR UTC LP2951
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage Feedback Voltage Shutdown Voltage Comparator Output Voltage Storage Temperature Operating Junction Temperature
SYMBOL Vcc Vfeedback Vshutdown Vco Tstr Tj
VALUE -0.3~+18 -1.5~+18 -0.3~+18 -0.3~+18 -65~+150 -40~+125
UNIT V V V V °C °C
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-001,E
UTC LP2950/2951
LINEAR INTEGRATED CIRCUIT
TYP. 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 2.5 3.0 3.3 3.6 5.0 MAX. 2.53 3.03 3.33 3.67 5.10 2.53 3.03 3.33 3.67 5.10 2.53 3.03 3.33 3.67 5.10 100 0.1 0.1 80 450 120 12 170 200 0.2 0.2 150 600 140 14 200 220 430 160 100
ELECTRICAL CHARACTERISTICS
(Tested at Tj=25°C,VIN=6V,IL=100µA and CL=1µF, unless otherwise specified) PARAMETER PART NUMBER TEST CONDITION MIN..